Patent WO-2021149510-A1 (WO)
Title: Pyrromethene boron complex, light-emitting element containing same, light-emitting element, display device, and illumination device
Inventor: HOSHINO HIDETAKA
IPC: C09K11/06
Filed: 2021-01-08
Abstract: By means of a pyrromethene boron complex represented by general formula (1), provided are: a light-emitting material having a high fluorescence quantum yield and a sharp light-emitting spectrum; and a light-emitting element having a high light-emitting efficiency, color purity, and a durability. (R 1 -R 6  are each independently selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a hydroxyl group, a thiol group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, an amino group, a silyl group, a siloxanyl group, and a boryl group. Said groups may also be substituents. Here, at least one among R 1  to R 4  is a hydrogen atom or an alkyl group. X 1  and X 2  are each independently selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a hydroxyl group, a thiol group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, an aryl group, a heteroaryl group, halogen, a cyano group, an aldehyde group, an acyl group, a carboxyl group, an ester group, an amide group, a sulfonyl group, a sulfonic acid ester group, a sulfonamide group, an amino group, a nitro group, a silyl group, a siloxanyl group, a boryl group, and a phosphine oxide group. Said groups may also be substituents. R 7  is represented by general formula (2).) (R 8 -R 10  are each independently selected from the group consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a hydroxyl group, a thiol group, an alkoxy group, an alkylthio group, an arylether group, an arylthioether group, an aryl group, a heteroaryl group, halogen, a cyano group, an aldehyde group, an acyl group, a carboxyl group, an ester group, an amide group, a sulfonyl group, a sulfonic acid ester group, a sulfonamide group, an amino group, a nitro group, a silyl group, a siloxanyl group, a boryl group, and a phosphine oxide group. Said groups may also be substituents. R 11  is selected from the group consisting of an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a hydroxyl group, a thiol group, an alkoxy group, an alkylthio group, an arylether group, an arylthioether group, an aryl group, a heteroaryl group, halogen, a cyano group, an aldehyde group, an acyl group, a carboxyl group, an ester group, an amide group, a sulfonyl group, a sulfonic acid ester group, a sulfonamide group, an amino group, a nitro group, a silyl group, a siloxanyl group, a boryl group, and a phosphine oxide group. Said groups may also be substituents. Ar 1  is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.)